Fourier Examples

#1 Posted: 1/6/2016 11:23:11 PM

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... New/revised/added
idct2 has been doctored and repaired.
In thhe WS [ ... Scrap] Smath does seem to be willing evaluate complex ?

Jean

Fourier Budapest39 Smoothing.sm (28.12 KiB) downloaded 1106 time(s).
Fourier Fejer Lanczos.sm (10.26 KiB) downloaded 1119 time(s).
Fourier Budapest39 Spectrum.sm (36.76 KiB) downloaded 1089 time(s).
Fourier Sampling.sm (30.71 KiB) downloaded 1135 time(s).
Fourier Sampling Complex [Scrap].sm (29.34 KiB) downloaded 913 time(s).
Fourier IDCT-II Smath CODE.sm (38.75 KiB) downloaded 1064 time(s).
Fourier DCT-II [Data].sm (78.87 KiB) downloaded 987 time(s).

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Davide Carpi 1/7/2016 5:15:00 AM, ioan92 1/7/2016 6:05:00 AM

#2 Posted: 1/8/2016 11:16:54 PM

Jean Giraud

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... Fourier Smpling Complex has been doctored /repaired.
Please, recycle the prevous work sheet "Fourier Sampling complex [Scarp]"
Observe the definition of 'i' imaginary in the program.

Jean

Fourier Sampling Complex.sm (41.39 KiB) downloaded 1116 time(s).

#3 Posted: 1/10/2016 6:27:16 PM

Jean Giraud

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... finally, the "i" imaginary does not have to be included in the program.
I have just checked "ifft" padding 0's: works great, here is proof/application.
Something wrong with "Phase_mod_pi".

Jean

Fourier ifft Padding [Dirac Filter].sm (46.06 KiB) downloaded 939 time(s).

#4 Posted: 1/12/2016 12:36:09 AM

Jean Giraud

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... these two are added mostly as a saving place.

Fourier fft, ifft Sanity.sm (34.86 KiB) downloaded 1074 time(s).
Fourier fft, ifft Reconciliation.sm (30.25 KiB) downloaded 1030 time(s).

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